Lamp-supporting deck-bracket.



A. H. WBLKER.

LAMP SUPPORTING DECK BRACKET.

APPLICATION FILED JUNE 13,1912.

1,1329910 Patented Mar.23,1915.

.ALEXANDER H. WELKEB, 0F BERLIN, ONTARIQ CANADA, ASSIGNOR TO THE HAW- THORNE MANUFACTURING COMPANY COBPQMTION 0]? CONNECTICUT.

INC., 0F BBIDGEPORT, CONNECTICUT, A

LAMP-SUPPORTING DECK-BRACKET.

Maasai;

Specification of Letters Patent.

Patented Mar.. 23, 1915.

Application filed .T une 18, 1912. Serial Ele. 703,580.

To all rwhom t may concern:

Be it known that I, ALEXANDER H. WEL- KER, a subject of the Kingof England, and a resident of Berlin, in the Province of Qntario and Dominion of Canada, have 1nvented an Improvement in Lamp-Support ing Deck-Brackets, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representlng like parts.' j 0 My invention relates to lamp supporting and adjusting devices, and is more particularly, though not exclusively, concerned with swiveling deck brackets for Search lights.

My invention will be best understoodl by reference to the following specification, when taken in connection with the accompanying illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claim.

In the drawings z-Figure l 1s a front ele# vation of a lamp and lamp-supporting deck bracket embodying my invention, a p0rt1on of the lamp being broken away to better illustrate the supporting device; Fig. 2 1s an enlarged detail view showing in plan one of the trunnions with its trunnion bearing and handle, and a portion of the lamp supported on the trunnion; and Fig. 3 is a detail side elevation of the parts shown in Fig. 2.

Referring to the drawings, and to the specific embodiment of my invention which I have there shown for illustrative purposes, I have there shown a lamp support 4, swiveled upon a base 5, the latter for that purpose being preferably provided with an upstanding hollow post 6, to receive a depending shank 7 on the lamp support. The post 6 may have suitable provision for clamping the shank 7, herein for that' purpose being provided with a split portion 8 and a pairpf ears 9, which receive a clamping-screw 10 having a suitable handle 11. By this means, the lamp support may be swiveled about a vertical axis and clamped in the desired position of adjustment.

The lamp support 4 is preferably bifurcated, or forked, having two laterallyspreading and upwardly-rising arms 12 and 13, terminating in trunnion bearings 14 bearings. One of the trunnion bearings,

herein the trunnion bearing 14, is provided with suitable means for securing the trunnion against swiveling movement, said bearing being herein provided for that purpose with ears 24 and 25, separated by a slot 26. I provide suitable means for drawing these ears together to contract the trunnion bearing and thus clamp the trunnion therein, preferably consisting of a clamp screw 27, having a shank 28, and passing loosely through the ear 24. This clamping screw may be provided with a suitable laterally projecting grasping handle 29, by means of which the same may be conveniently manipulated by the hand of the operator.

A lamp 30, which may be of any suitable character, is supported upon the trunnion members 18 and 19,- the latter being herein provided for that purpose with upstanding studs 31 and 32, which pass through lugs 33 and 34 on the lamp, and are provided with nuts 35 and 36,'respectively, by means of which the lamp may be rigidly secured to the trunnion members.

One of the trunnion members, preferably the trunnion member 18, is provided with a suitable grasping handle 37, preferably disposed between the trunnion bearing 14 and the adjacent side of the lamp, and preferably projecting rearwardly where it may be conveniently grasped by the operator and manipulated to swing the lamp about the horizontal axis of the trunnions or about the vertical axis of the lamp support, without danger of the operator burning his hand, as is often the case with grasping handles as heretofore arranged on Search lights. It affords, moreover, a convenient means for turning the lamp in any desired direction by the use of the one hand of the operator. By placing the grasping handle between the lamp and the adjacent trunnion, the shank of the handle may be made integral with threaded into the ear 25,

exceedingly strong and simple connection.

withthe lamp without danger of looseness or play.

. lt will be observed that the lamp is placed l is swiveled. When placed as shown in the drawings, the center of gravity is above the axis of its trunnion. By simply swingingthe lamp through an angle ont 180 degrees,

it may be inverted so that its centerof gravity will'be below its axis. rll`he same result can also be secured by detaching the lamp from the studs, and inverting the latter, after which the lamp may be replaced on the studs. By placing the lamp eccentrically with respect to its horizontal axis, certain .advantageous results are secured. When the center of the lamp is located below its axis, the lamp naturally tends to balance itself,-that is to say, it constantly tends to come to a position of equilibrium with the axis of the lamp body and lens horizontal. In the darkness, the operator can feel the resistance or lack of resistance due to the horizontal orinclined position of the lamp as the case may be, and can judge howV the lamp is pointing with respect to a horizontal plane by the degree of resistance Y, which it presents to his hand. 'lhe same 1s true when the studs are upstanding and the center of the lamp is above its axis, except that in this case, the lamp is unbalanced, or in other words, it has a tendency to move to an inclined position. Therefore, when the lamp is placed with its center above its axis, itis easy for the operator to hold the lamp in an extremely inclined position pointed either up or down. When the lamp is ininserer verted, so that itscenter of gravity is below its axis, this position is particularly advantageous when the lamp is to be maintained inclined only slightly from horizontal. Either of these positions is instantly at the command of the operator, and contributes in a marked degree to the ease of manipulation and control of the lamp.

While ll have herein shown and described one 'form of my invention for illustrative purposes, and have disclosed and discussed in detail the'construction and arrangement incidental to one speciic embodiment thereosiitis to be understood that the invention is limited neither to the meredetails'or relative arrangement of parts, nor to its specific application herein shown, but that extensive deviations from the illustrated form or embodiment of the invention may be made without y departing from the principles thereof.A l A Having thus described one form of my invention, what l claim is v 'llhe combination with a lamp-support having trunnion-bearings, of a pair of l..- shaped trunnion-rnembers provided with laterally projecting trunnions swiveled in said trunnion-bearings and provided with studs disposed in the same vertical plane with said trunnion members, a lamp provided with lugs to receive said studs, and a grasping handle secured to one .of said trunnion-members, between said lamp and the adjacent trunnion bearing.

lln testimony whereof, ll have signed my name to this specication, in the presence of v 'two subscribing witnesses.

ALEXANDER H. WELKER. Witnesses:

Anrmnn B. Pontoon, E. El. Warm, 

